Question about the hybrid silent fan control on new Seasonic PSU. If you want to perform a hybrid sleep, simply enable it as above, then select the regular “Sleep” option in the shutdown options to activate a hybrid sleep. The fan has a hybrid mode where the fan can not run until it gets warm, or a mode … 1. Seasonic recommends the fan facing up with hybrid mode enabled and this is what the corsair PSU is forced to use. According to Seasonic's customer service "Nothing indicates that there should be a problem" "The fan should also be kicking on regardless of hybrid mode is on or off." As a leading provider of silent power supply, Seasonic this time around delivers a true breakthrough solution for thermal and noise management. The fan then should spin slowly and quietly until around 50% load (430 W) when the fan will gradually spin faster depending on load. When the load further increases, the S 3 FC fan control will keep regulating perfect cooling through the Silent Mode or Cooling Modes. Posted by 8 years ago. Off/O is Hybrid, On/I is "normal" mode. I spoke with Amazon and they agreed to take it back. This was after I told them that the fans would not turn on at all. At the front of the power supply there are the 10 slots for the modular cables. Power supply fan modes -- Comment from Seasonic rep on another forum regarding hybrid silent fan mode. Typical of SeaSonic, the PSU sports hybrid fan control, which can be turned on or off by means of a switch. This is because hybrid sleep overrides regular sleep. The active cooling is done by the Hong Hua 135mm fan while the passive cooling of the components is ensured by 4 metallic heatsinks. I had a question about the Hybrid Silent Fan control that the PSU comes with. I bought a Seasonic x750 Gold PSU 5 months ago because I wanted to avoid something like this since I know Seasonic is one of the best out there. In Normal mode, the fan runs continuously, whereas it runs only when needed in Hybrid mode. The Hybrid mode allows the power supply to function with the fan switched off until a temperature stage is reached. (In Hybrid or Fanless Mode (S3FC) the fan will not spin.) On the left side, the AC slot and the On/Off switch are located. On the right, there is a button labeled “Hybrid mode” which will turn on or off the Seasonic Hybrid Silent fan control system. I should have stuck with an EVGA psu. While “hybrid sleep” is a cryptic … The back of the PSU comes with a switch that says fan control, and the options are Hybrid or Normal. … Hybrid fan mode runs the fan slower. The Hybrid Silent Fan Control setting (the “O” position, or when the fan control button is NOT pressed) enables the power supply to run in Fanless Mode up to 20 % (± 5 %) of the maximum rated load. I know a number of us have seasonic PSUs in our XPS 8700 or 8500 or 8900s. ATTENTION! The advice is separated based on the hybrid fan setting, you're reading the section with hybrid fan mode OFF. The X Series adopts a clever “Hybrid Silent Fan Control” design, which offers three distinct operation modes, fanless mode, silent mode, and cooling mode. Feb 8, 2013 #10 T. TempestBlayze n00b. Close. Power of Two. Make sure that the fan control switch on the power supply is set to Normal Mode (S2FC). The Prime line uses a new platform, proprietary of Seasonic. In "Hybrid" fan mode, the SeaSonic SS-860XP² PSU's fan should not operate until approximately 30% load is applied (about 260 W). I put my Seasonic Platinum 650W in hybrid mode a long time ago and forgot about it. 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